Time Travel is here and it's time to go to the Cretaceous at last and observe some dinosaurs! But we gotta Race Against the Clock, because by the end of the day the asteroid is going to hit! But wait, wasn't the Cretaceous period 79 million years long? Wouldn't it be better to go visit it any other day but the one guaranteed to kill you? Related to Contrived Coincidence and In the Past Everyone Will Be Famous. May be part of a Phlebotinum Killed the Dinosaurs plot. Examples involving the K-T extinction: